Overeating and indigestion blamed for 1,000 turtle doves falling dead in Italy with strange blue stain on their beaks

Blue stain believed to be sign of poisoning or hypoxia - lack of oxygen that is precursor to altitude sickness

Cold weather and overbreeding blamed for deaths of two 2million fish in Chesapeake Bay

Disease behind deaths of 100,000 fish in Arkansas River

At least nine incidents of mass animal deaths across the globe

Hundreds of confused birds plummeted to their deaths in multiple locations in the U.S.

Rapid movement of Magnetic North Pole towards Russia may have caused bird deaths

Thousands of dead turtle doves that rained down on roofs and cars in an Italian town were victims of their on greed, an expert claimed today.

Residents in Faenza described the birds falling to the ground like 'little Christmas balls' with strange blue stains on their beaks.

Last night it emerged that 40 turtle doves had also been found dead at San Cesario near Modena, 60 miles from Faenza, and tests were also being carried out on their bodies.

Not just fish: This year thousands of Turtle Doves rained down on roofs and cars in Italy

Shock: Residents described seeing individual doves fall from the sky, before groups of 10 or 20 began hitting roofs and cars

The birds have been found by
residents in the village for the last three days and they alerted
authorities after hearing reports of the incident at Faenza.

Gianni Sereni, who found 12 birds in
his garden, said: 'At first I didn't think anything of it but then I saw
the reports on the news about what had happened elsewhere so I called
the local veterinary service.'

Initial tests on up to 1,000 of the doves from Faezna indicated that the blue stain could have been caused by poisoning or hypoxia.

Hypoxia, a lack of oxygen, is known to cause confusion and illness in
animals. It is also a common precursor to altitude sickness.

Gianni Sereni, who found 12 birds in his garden, said: 'At first I didn't think anything of it but then I saw the reports on the news about what had happened elsewhere so I called the local veterinary service.'

Official
results on the Italian birds are due tomorrow, but Rodolfo Ridolfi, a
director at the regional zoological institute, said:'We are fairly confident
the birds died as a result of massive indigestion brought on by over-eating.

Mystery: Experts said they believed the blue colouration around the doves' beaks may indicate poisoning or lack of oxygen

'The most likely cause are discarded sunflower seeds
that were found on an industrial estate close to where the bodies of the turtle
doves were found.

'In essence the birds were greedy, ate too many of the
seeds - which we have found inside them during autopsies - and this brought on
the indigestion that led to their death.'

Mr Ridolfi said that cold weather last week could have
caused the turtle doves to die as the flock was swept into a high-altitude wind
storm before falling to the earth.

It comes after two million dead fish were found to have washed up on shores in Chesapeake Bay, Maryland.

The alarming find is being blamed by
authorities in Maryland on the stress caused by unusually cold water and
overbreeding among spot fish.

Beached: Two million spot fish washed up dead on the shores of Chesapeake Bay, Maryland, after unusually cold weather last month

Riddle: This is not the first time fish have washed up in Florida. Last month thousands were found dead on the shores of Spruce Creek

That
investigation comes just days after the deaths of an estimated 100,000
fish in northwest Arkansas, which is being blamed on disease.

A statement by the Maryland Department of the Environment said: 'Natural causes appear to be the reason.

'Cold water stress exacerbated by a
large population of the affected species (juvenile spot fish) appears to
be the cause of the kill.'

Preliminary tests of the water in Chesapeake Bay have showed the quality was acceptable, officials said.

The statement added: 'The affected fish are almost exclusively juvenile spot fish, three to six inches in length.

'A
recent survey showed a very strong population of spot in the bay this
year. An increased juvenile population and limited deep water habitat
would likely compound the effects of cold water stress.'

Gruesome: New Year revellers watched in horror as the birds rained down on houses and cars in Beebe

3,000 blackbirds on roofs and roads in the small town of Beebe, Arkansas

Thousands of 'devil crabs' washed up along the Kent coast near Thanet

Thousands of drum fish washed along a 20-mile stretch of the Arkansas River

Two million small fish in Chesapeake Bay, Maryland

Thousands of dead fish found floating in warm Florida creek

Hundreds of snapper fish found dead in New Zealand

Scores of American Coots found dead on Texas highway bridge

Experts
have speculated that New Year fireworks, thunderstorms, cold weather,
parasites and even poisoning may be behind the deaths.

But
conspiracy theorists have also speculated on the internet that secret
government experiments could be behind them, with some even claiming it
was a sign of a looming Armageddon at the end of the Mayan calendar next
year.

Another theory is that the rapid movement of the Magnetic North Pole towards Russia may have affected the birds' innate navigation systems.

The plot thickens: Rescue chief Christer Olofsson holds a dead bird in Falkoping, Sweden. Dozens of jackdaws were found dead on the street

Creepy: Thousands of dead drum fish were also discovered just miles away lining the shores of the Arkansas River

Inbuilt navigation systems in birds and fish is believed to be affected by magnetism.

Scientists have said the Magnetic North Pole is shifting at an average of around 25 miles a year.

With birds and fish relying on it to travel to breeding grounds and warmed climes, there are fears that the shifting pole could be confusing the animals which means they do not migrate in time to avoid cold weather.

Tests are being carried out on the dead birds and fish, but results are not expected for several weeks.

Scientists
have been baffled by the sudden deaths of hundreds of birds which have
plummeted to the ground seemingly simultaneously in several locations.

Two hundred American Coots were found dead on a highway bridge crossing Lake O' the Pines in Big Cypress Creek, Texas.

They are believed to have been hit by passing vehicles while walking or apparently trying to roost on the bridge.

Swedish
experts blamed the shock of New Year fireworks for the unexplained
deaths of 50 jackdaws found on a street in Falkoping, Sweden.

Many of the birds are believed to have died from stress or as a result of being run over while disoriented.

The
largest incident took place in Beebe, Arkansas, were horrified
revellers witnessed around 3,000 blackbirds crashing to their deaths
into homes, cars and each other as they celebrated New Year.

Another 450 birds were found strewn along a highway in Baton Rouge, Louisiana, after apparently hitting overhead power lines.

In both cases, the birds are believed to have become confused and were flying at a lower height than usual.

The deaths of tons of fish across the globe is being attributed to unusually cold water.

Thousands
of Brazilian fishermen have been left struggling to make ends meet
after the sale of seafood was temporarily suspended when masses of fish
were discovered in Paranaguá, Antonina and Guaraqueçaba Pontal do
Paraná.

Fish were also discovered rotting and floating in Spruce Creek, Florida, after another period of cold weather.

100,000 drum fish were found strewn along the shore of the Arkansas River.

And
the cold snap has been blamed for the deaths of 40,000 Velvet swimming
crabs - known as 'devil crabs - found littering beaches in Thanet, Kent.

Thousands of them: Crabs washed up at Palm Bay, Margate, are thought to have died of hypothermia